Even though it was just one week ago when they were spotted ringing in 2013 with a kiss, the singer, 23, and One Direction star Harry Styles, 18, are no longer an item, reports the Daily Mail.

The publication cites an unnamed source as saying the pair had a big fight after their New Year's Eve PDA. Apparently, Swift and Styles jetted off to the British Virgin Islands on New Year's Day for a little R&R, but Swift cut the vacation short and flew back to the USA on her own Jan. 4.

It was apparently another quick romance for Swift, who split from summer fling Conor Kennedy in October. Shortly after, she began dating Styles and even spent time with his parents in England over the holidays, reportsLife & Style. The magazine cites busy schedules as a reason for the split.

UPDATE: Adding fuel to the romance fire is a tweet from Swift, quoting her own song, Trouble. It says simply: "...'til you put me down."